The article says nothing about the situation where one partner already has AIDS and is unwilling to practice abstinence, except to recognize it as a very serious problem:
Moreover, the condition of women, who are subject to the will of their husbands on pain of rejection with the gravest social consequences, in a certain way explains why it is women who, in the various countries of sub-Saharan Africa, are today the worst hit by the HIV/AIDS infection (12-13 women for every 10 men).(18)
DOH! Of course it's a serious problem. Changing social mores is a solution that condemns a certain number of these women to certain death.
Would this not be considered rape?
Perhaps if we look back to similar events in the past and determine the position of the Church. Syphilis, which could be fatal in earlier times (if memory serves), etc.